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| Soil dissolved organic carbon in terrestrial ecosystems: Global budget, spatial distribution and controls | |
| Guo, Ziyu; Wang, Yihui1; Wan, Zhongmei2; Zuo, Yunjiang; He, Liyuan1; Li, Dan3; Yuan, Fenghui1,4; Wang, Nannan1,5; Liu, Jianzhao; Song, Yanyu; Song, Changchun; Xu, Xiaofeng1 | |
| 2020 | |
| 发表期刊 | GLOBAL ECOLOGY AND BIOGEOGRAPHY
 |
| ISSN | 1466-822X |
| 卷号 | 29期号:12页码:2159-2175 |
| 摘要 | Aims Soil dissolved organic carbon (DOC) is a primary form of labile carbon in terrestrial ecosystems, and therefore plays a vital role in soil carbon cycling. This study aims to quantify the budgets of soil DOC at biome and global levels and to examine the variations in soil DOC and their environmental controls. Location Global. Time period 1981-2019. Methods We compiled a global dataset and analysed the concentration and distribution of DOC across 10 biomes. Results Large variations in DOC are found among biomes across space and the soil DOC concentration declines exponentially along soil depths. Tundra has the highest soil DOC concentration in 0-30 cm soils [453.75 (95% confidence interval: 324.95-633.5) mg/kg], whereas tropical and temperate forests have relatively lower DOC concentrations, ranging from 30.20 (24.78-36.80) to 54.54 (49.77-59.77) mg/kg. DOC generally accounts for < 1% of total organic carbon in soils, and DOC in 0-30 cm contributes more than half of the total DOC in the 0-100 cm soil profile. Furthermore, variations in DOC are primarily controlled by soil texture, moisture, and total organic carbon. Main conclusions A global synthesis is combined with an empirical model to extrapolate the DOC concentration along soil profiles across the globe, and global budgets of DOC are estimated as 7.20 Pg C in the top 0-30 cm and 12.97 Pg C in the 0-100 cm soil profile, respectively, with a considerable variation among biomes. The strong soil texture control but weak total organic carbon (TOC) control on DOC variations suggest that the investigation of physical protection of soil organic carbon might need to expand to consider the labile C in soils. The global maps of DOC concentration serve as a benchmark for validating land surface models in estimating carbon storage in soils. |
| 关键词 | biomes dissolved organic carbon terrestrial ecosystems vertical distribution |
| 学科领域 | Ecology ; Geography, Physical |
| DOI | 10.1111/geb.13186 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | MICROBIAL COMMUNITY COMPOSITION ; DIFFERENT LAND USES ; ACID FOREST SOILS ; NITROGEN DON ; MATTER DOM ; ALTITUDINAL GRADIENT ; SUBTROPICAL FOREST ; METHANE EMISSIONS ; CONIFEROUS FOREST ; INNER-MONGOLIA |
| WOS研究方向 | Environmental Sciences & Ecology ; Physical Geography |
| WOS记录号 | WOS:000576598600001 |
| 出版者 | WILEY |
| 文献子类 | Article |
| 出版地 | HOBOKEN |
| EISSN | 1466-8238 |
| 资助机构 | San Diego State University ; Basic Scientific Research Operating Expenses of Heilongjiang Provincial Universities [2018CX05] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41730643, 41975150, 41701198] ; National Key RD Program [2016YFA0602303] |
| 作者邮箱 | ywang7@sdsu.edu ; xxu@sdsu.edu |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/21566 |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun, Jilin, Peoples R China 2.San Diego State Univ, Biol Dept, San Diego, CA 92182 USA 3.Jilin Univ, Coll Earth Sci, Changchun, Jilin, Peoples R China 4.Heilongjiang Inst Technol, Coll Surveying & Mapping Engn, Harbin, Peoples R China 5.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang, Peoples R China 6.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Ziyu,Wang, Yihui,Wan, Zhongmei,et al. Soil dissolved organic carbon in terrestrial ecosystems: Global budget, spatial distribution and controls[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2020,29(12):2159-2175. |
| APA | Guo, Ziyu.,Wang, Yihui.,Wan, Zhongmei.,Zuo, Yunjiang.,He, Liyuan.,...&Xu, Xiaofeng.(2020).Soil dissolved organic carbon in terrestrial ecosystems: Global budget, spatial distribution and controls.GLOBAL ECOLOGY AND BIOGEOGRAPHY,29(12),2159-2175. |
| MLA | Guo, Ziyu,et al."Soil dissolved organic carbon in terrestrial ecosystems: Global budget, spatial distribution and controls".GLOBAL ECOLOGY AND BIOGEOGRAPHY 29.12(2020):2159-2175. |
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